| 摘要 |
PROBLEM TO BE SOLVED: To facilitate to take in and out of a battery and suppress the backlash of the battery. SOLUTION: A square type battery 12 is housed inside a square type battery housing part 6 with an opening part. A tongue piece 24 is protruded from one short edge side of the square type battery housing part 6 to the upper side of the opening part, and it is energized in the direction separating from the opening part. In a state that the opening is capped by the cap member 4, the two members 4 press the tongue piece 24 so that the tongue piece 24 abuts on the square type battery 12 in the housing part 6 of the square type battery. |
